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Licensed Unlicensed Requires Authentication Published by De Gruyter June 24, 2016

High Dynamic Range Cognitive Radio Front Ends: Architecture to Evaluation

Arun Ashok, Iyappan Subbiah, Gabor Varga, Moritz Schrey and Stefan Heinen
From the journal Frequenz


Advent of TV white space digitization has released frequencies from 470 MHz to 790 MHz to be utilized opportunistically. The secondary user can utilize these so called TV spaces in the absence of primary users. The most important challenge for this coexistence is mutual interference. While the strong TV stations can completely saturate the receiver of the cognitive radio (CR), the cognitive radio spurious tones can disturb other primary users and white space devices. The aim of this paper is to address the challenges for enabling cognitive radio applications in WLAN and LTE. In this process, architectural considerations for the design of cognitive radio front ends are discussed. With high-IF converters, faster and flexible implementation of CR enabled WLAN and LTE are shown. The effectiveness of the architecture is shown by evaluating the CR front ends for compliance of standards namely 802.11b/g (WLAN) and 3GPP TS 36.101 (LTE).


The authors acknowledge the support of the German Federal Ministry of Education and Research (BMBF) regarding our research within the framework of the kogLTE project.


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Received: 2015-7-6
Published Online: 2016-6-24
Published in Print: 2016-7-1

©2016 by De Gruyter

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